Scan Tool Testing and Procedures

Closed Throttle Position Switch Scan Tool Data:

NOTE: The closed throttle position switch normally turns off when the voltage of the throttle position sensor (TPS) is 50 - 100 mV higher than the voltage at the idle position. If the closed throttle position switch turns back on after the TPS voltage has risen by 100 mV and the throttle valve has opened, the closed throttle position switch and the TPS need to be adjusted.